diff --git a/include/constants/battle_config.h b/include/constants/battle_config.h
index f7b38000c..4edb71696 100644
--- a/include/constants/battle_config.h
+++ b/include/constants/battle_config.h
@@ -1,6 +1,8 @@
 #ifndef GUARD_CONSTANTS_BATTLE_CONFIG_H
 #define GUARD_CONSTANTS_BATTLE_CONFIG_H
 
+#include "global.h"
+
 // Species with peculiar battle effects.
 #ifndef POKEMON_EXPANSION
     #define SPECIES_DIALGA                  0